Home / 14,216.68-19,631.40-8,920.60

Finding the Fourth Proportional to 14,216.68, 19,631.40 and 8,920.60

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Solution

The fourth proportional to 14,216.68, 19,631.40 and 8,920.60 is: 12,318.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,216.68 : 19,631.40 = 8,920.60 : x
  2. Step 2: Convert to fraction form
    14,216.68/19,631.40 = 8,920.60/x
  3. Step 3: Cross multiply
    14,216.68x = 19,631.40 × 8,920.60
  4. Step 4: Simplify right side
    14,216.68x = 175,123,866.84
  5. Step 5: Solve for x
    x = 175,123,866.84/14,216.68
  6. Step 6: Final answer
    x = 12,318.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.